Word Origin & History

unthinkable 1430, "too large to be conceived, unimaginable," from un- (1) "not" + thinkable (see think). Meaning "incapable of being framed by thought" is recorded from c.1445. Unthinking "unreflecting" is attested from 1676.

Example Sentences for unthinkable

They were much given to gluttony and drinking; and there was an unthinkable amount of scandal and backbiting and jealousy.

That you can deny me in this the hour of my desolation is unthinkable.

Worn as he was, it was unthinkable that he should go far to-night.

Otherwise the continuity of the capitalist world is unthinkable.

It was unthinkable that he could live in it alone, it would be haunted by memories, he would see her in every room.

It was unthinkable to imagine Patsy Dale in the hands of the Indians.

But to hold up the Seville-to-Madrid—it is unthinkable, it is not the will of God!

Indeed he looks in unthinkable places, and finds the incredible.

It was not at all unthinkable that a blending of our souls had taken place, and that we no longer belonged to ourselves.